Infernal Affairs
in the other's camp, and a deadly game of deception begins as Chan and Lau—now on opposite sides—struggle to uncover each other's true allegiance before the truth destroys them all.
“Loyalty. Honor. Betrayal.”
Synopsis
Chan Wing Yan, a young police officer, is sent undercover as a mole in the local mafia. Meanwhile, Lau Kin Ming, a young member of the mafia, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, work to uncover the mole within their ranks while racing against time.
Credits
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How many hands made this film
The scale of the collaboration
A crew of 59+ credited
Why a floor?
This is a minimum, not a total. We only count the credits we’ve captured so far, and coverage is uneven — a blockbuster might show a few hundred names while another of the same size shows a couple dozen. The real crews all ran into the thousands. The number here only grows as full credits are enriched — so we frame it as a floor, never a headcount.
Craft leads on file
Edited by Curran PangShot by Yiu Fai LaiScored by Kwong Wing Chan
Box Office
2002 · Box office
⚖️ Fell short of break-even — grossed 1.4× its budget
Why 2.5×?
Cinemas keep roughly half of every ticket sold, and a wide release’s marketing often costs about as much again as the film — so a movie needs to gross around 2.5× its production budget just to break even theatrically. It’s a rule of thumb, not the studio’s ledger (home video and streaming come later).
Worldwide gross
$8.8M
Full synopsis
Also known as
- Infernal Affairs - Die achte Höllede
- Mou gaan doude
- Infernal Affairsen
- Wu Jian Daoen
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Cast & Crew
59 unique people credited
Top billed cast
Andy Lau
as Inspector Lau Kin Ming
Tony Leung Chiu Wai
as Chen Wing Yan
Anthony Chau Sang Wong
as SP Wong Chi Shing
Anthony Wong Chau Sang
as 黄志诚
Eric Tsang
as Hon Sam
Eric Tsang Chi Wai
as 韩琛
Kelly Chen
as Dr. Lee Sum Yee
Kelly Chen Hui Lin
as 李心儿
Sammi Cheng
as Mary
Sammi Cheng Sau Man
as Mary
Edison Chen
as Young Lau Kin Ming
Elva Hsiao
as May
Supporting cast
39Shawn Yue
as Young Chan Wing Yan
Chapman To Man Chat
as 傻强
Gordon Lam Ka Tung
as 大B
Chapman To
as Tsui Wai-keung
Shawn Yue Man Lok
as 少年陈永仁
Berg Ng Ting Yip
as 张Sir
Wan Chi Keung
as 梁警司
Dion Lam
as 迪比亚路
Tony Ho
as 疑犯
Courtney Wu
as Hi-Fi铺老板
Hui Kam Fung
as 警校校长
Chaucharew Wichai
as 泰国毒品买家
Au Hin Wai
as 大象
Lee Tin Cheung
as 孖八
Victy Wong Yin Keung
as 重案组警员
Yiu Man Kei
as 重案组警员
Benjamin Yuen Wai Ho
as 重案组警员
Wong Chi Wang
as 重案组警员
Cheng Wing Yee
as 重案组警员
Mak Wai Gok
as 重案组警员
Kui Mei Yee
as 重案组警员
Tam Kon Chung
as 重案组警员
Che Jan Bong
as 重案组警员
Chin Yiu Wing
as 重案组警员
Ho Chun Hin
as 韩琛手下
Simon Yu Sai Tang
as 韩琛手下
So Wai Nam
as 韩琛手下
Lai Chi Wai
as 韩琛手下
Jerry Leung Ho Kai
as 韩琛手下
Terry Lee Ji Ming
as 韩琛手下
Alex Lee Yip Kin
as 韩琛手下
Chow Pok Foo
as 韩琛手下
Hui On Tat
as 高级陈警司
Ho Wing Ning
as 警司
Simon Cheung Yuk San
as 学校教官
Leung Chiu Yee
as May女儿
Chang Kin Yung
as Policeman
Lee Wah Chu
as 总警司
Pauline Yeung Yung Lin
as Nanny
Directors
2Writers
2Producers
1Other crew
6Parents Guide
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